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Diffstat (limited to 'mailman/Bouncers/DSN.py')
| -rw-r--r-- | mailman/Bouncers/DSN.py | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/mailman/Bouncers/DSN.py b/mailman/Bouncers/DSN.py deleted file mode 100644 index 37e5bcb83..000000000 --- a/mailman/Bouncers/DSN.py +++ /dev/null @@ -1,99 +0,0 @@ -# Copyright (C) 1998-2009 by the Free Software Foundation, Inc. -# -# This file is part of GNU Mailman. -# -# GNU Mailman is free software: you can redistribute it and/or modify it under -# the terms of the GNU General Public License as published by the Free -# Software Foundation, either version 3 of the License, or (at your option) -# any later version. -# -# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT -# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -# more details. -# -# You should have received a copy of the GNU General Public License along with -# GNU Mailman. If not, see <http://www.gnu.org/licenses/>. - -"""Parse RFC 3464 (i.e. DSN) bounce formats. - -RFC 3464 obsoletes 1894 which was the old DSN standard. This module has not -been audited for differences between the two. -""" - -from email.Iterators import typed_subpart_iterator -from email.Utils import parseaddr - -from mailman.Bouncers.BouncerAPI import Stop - - - -def check(msg): - # Iterate over each message/delivery-status subpart - addrs = [] - for part in typed_subpart_iterator(msg, 'message', 'delivery-status'): - if not part.is_multipart(): - # Huh? - continue - # Each message/delivery-status contains a list of Message objects - # which are the header blocks. Iterate over those too. - for msgblock in part.get_payload(): - # We try to dig out the Original-Recipient (which is optional) and - # Final-Recipient (which is mandatory, but may not exactly match - # an address on our list). Some MTA's also use X-Actual-Recipient - # as a synonym for Original-Recipient, but some apparently use - # that for other purposes :( - # - # Also grok out Action so we can do something with that too. - action = msgblock.get('action', '').lower() - # Some MTAs have been observed that put comments on the action. - if action.startswith('delayed'): - return Stop - if not action.startswith('fail'): - # Some non-permanent failure, so ignore this block - continue - params = [] - foundp = False - for header in ('original-recipient', 'final-recipient'): - for k, v in msgblock.get_params([], header): - if k.lower() == 'rfc822': - foundp = True - else: - params.append(k) - if foundp: - # Note that params should already be unquoted. - addrs.extend(params) - break - else: - # MAS: This is a kludge, but SMTP-GATEWAY01.intra.home.dk - # has a final-recipient with an angle-addr and no - # address-type parameter at all. Non-compliant, but ... - for param in params: - if param.startswith('<') and param.endswith('>'): - addrs.append(param[1:-1]) - # Uniquify - rtnaddrs = {} - for a in addrs: - if a is not None: - realname, a = parseaddr(a) - rtnaddrs[a] = True - return rtnaddrs.keys() - - - -def process(msg): - # A DSN has been seen wrapped with a "legal disclaimer" by an outgoing MTA - # in a multipart/mixed outer part. - if msg.is_multipart() and msg.get_content_subtype() == 'mixed': - msg = msg.get_payload()[0] - # The above will suffice if the original message 'parts' were wrapped with - # the disclaimer added, but the original DSN can be wrapped as a - # message/rfc822 part. We need to test that too. - if msg.is_multipart() and msg.get_content_type() == 'message/rfc822': - msg = msg.get_payload()[0] - # The report-type parameter should be "delivery-status", but it seems that - # some DSN generating MTAs don't include this on the Content-Type: header, - # so let's relax the test a bit. - if not msg.is_multipart() or msg.get_content_subtype() <> 'report': - return None - return check(msg) |